Explained Chemistry

Principles of Polymer Chemistry: Monomers, Polymers, And Macromolecules An Overview (Lect 1) Polymers are very interesting materials. Although polymers are one of the building blocks of life on Earth, we only recently understood their nature. The origin of the word “polymer” comes from the Greek word “polymeros,” which means “many parts.” Polymers are formed by linking small monomers, from the…

Fundamental Chemistry: Moles and Concentration Calculations Course (15) Formation of Solution (solute + solvent) Solutions consist of two components: the solute, which is the substance being dissolved, and the solvent, the dissolving medium. Simple way to distinguish between the solute and solvent is that: the solvent is present in a large amount than the solute (solvent outweigh the solute in…

Course Chemical Bonds: Covalent Bonding and Shapes of Molecules (20) sp Hybrid Orbitals—Bond Angles of Approximately 180° In sp hybridization, only one p orbital participates in the hybridization with the s orbital. If we looked at sp hybridization of carbon atom, carbon’s 2s orbital hybridizes with one of the 2p orbitals, resulting in the formation of two sp hybridized orbitals, while the…

Fundamental Chemistry: Moles and Concentration Calculations Course (14) Precipitation reactions occur when aqueous solutions react to produce a solid precipitate. These equations can be simplified similarly to ion equations. Initially, we list the ions participating in the reaction, then remove the ions that don’t get involved in the formation of the precipitate. Exercise 1 Write the…

Course Chemical Bonds: Covalent Bonding and Shapes of Molecules (19) Hybridization sp2 Hybrid Orbitals—Bond Angles of Approximately 120° In sp2 hybridization, the s orbital hybridizes with two p orbitals. We say “2” indicating the number of involved p orbitals. Notice, this leaves one p orbital unhybridized. This orbital typically forms the pi covalent bond. Here, carbon is sp2 hybridized,…

Fundamental Chemistry: Moles and Concentration Calculations Course (13) Balancing ionic equations: When ionic compounds dissolve in water, they separate into ions. However, not all ions participate in the reaction. Those ions that do not actively engage in the chemical reaction are termed spectator ions. The ionic equation provides a simplified representation of the chemical equation by…

The molecular formula is a formula that defines both the type and number of atoms in a compound. The empirical formula is a representation of the ratio of symbols that compose a compound without providing the exact number of each type. Click link to learn

Fundamental Chemistry: Moles and Concentration Calculations Course (9) The Molecular Formula The molecular formula is a formula that defines both the type and number of atoms in a compound. We use molecular formulas for writing balanced equations and calculating molar masses. Example Methane has the molecular formula CH4. From this formula, from understand that methane has one carbon atom and…